| 摘要 |
PURPOSE: A screen device is provided to improve screen efficiency for steel raw material. CONSTITUTION: A screen device includes a storage hopper (100), a chute (200), a screen mat (300) and an air spraying part (400). The storage hopper stores steel raw material including a first raw material and a second raw material. The first raw material has grains above established grain size, and the second raw material has grains below the established grain size. The chute is connected to the storage hopper and discharges the steel raw material. The screen mat is adjacent with the chute, and has a hole corresponding to the established grain size, and filters the first raw material and passes through the second raw material of the steel raw material. The air spraying part sprays air with the steel raw material emitted from the chute. |
